Chemistry Middle School

Can yall please help me with this

Answers

Answer 1

Answer:

option D

Explanation:

option D is the correct answer.

mechanical energy = kinetic energy + potential energy

mechanical energy = 40+ 60 = 100 joules .

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you.

Answer 2

I think it is D you can mark the person above me brainlest

Related Questions

How does melanin provide protection against skin cancer? use absorb
energy
light in your sentece

Answers

Energy for the light can cause skin cancer and damage genetic materials (melanocytes) however melanin absorbs the light meaning the genetic material in their skin cells are protected from any damage so in conclusion the more melanin in the cells the more their cells are protected

The melanin provides protection against skin cancer by absorbing harmful UV light from the electromagnetic spectrum.

What is electromagnetic spectrum?

The electromagnetic spectrum consists of radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

Learn more about electromagnetic spectrum,here:

https://brainly.com/question/23727978

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pls help really easy just search the questions f u need to

Answers

Answer:i cant seee

Explanation:

none

1. because it’s features are very very like the planet mars so is useful for research on the planet. 2. it protects scientists from the extreme temperatures. 3.i’m not sure but i guess they would research how suitable mars is for humans to live on?

What patterns in the rock layer fossils helped you identify an extinction?

Answers

Answer:

Hope this helps!! :D

Explanation:

Often, the rock layers bookending the mass extinction are noticeably different in their compositions. These changes in the rocks show the effects of environmental disturbances that triggered the mass extinction and sometimes hint at the catastrophic cause of the extinction.

You can often tell by disturbances in the fossils bones. Maybe like dust or particles symbolize harm or mass extinction in a prehistoric animal or maybe even new fossils like some animals that went extinct recently like 200 years.

Help its for science ill give brainilest.

Answers

directly proportional

Answer:

This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.

Explanation:

What type of erosion cause a canyon form?
water
wind
ice

Answers

Answer:Water

Explanation: none

The answer would be ice

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